US5299927A - Vacuum press for continuous production of plastic extruded masses - Google Patents

Vacuum press for continuous production of plastic extruded masses Download PDF

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Publication number
US5299927A
US5299927A US07/851,483 US85148392A US5299927A US 5299927 A US5299927 A US 5299927A US 85148392 A US85148392 A US 85148392A US 5299927 A US5299927 A US 5299927A
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US
United States
Prior art keywords
press
vacuum chamber
housing elements
housing
vacuum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/851,483
Other languages
English (en)
Inventor
Eberhard Steffens
Wolfram Kunze
Klaus Lorenz
Holger KieBling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KEMA-KERAMIKMASCHINENBAU GORLITZ A CORP OF DEUTSCHLAND GmbH
Kema Keramikmaschinenbau Gorlitz GmbH
Original Assignee
Kema Keramikmaschinenbau Gorlitz GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kema Keramikmaschinenbau Gorlitz GmbH filed Critical Kema Keramikmaschinenbau Gorlitz GmbH
Assigned to KEMA-KERAMIKMASCHINENBAU GMBH GORLITZ, A CORP. OF DEUTSCHLAND reassignment KEMA-KERAMIKMASCHINENBAU GMBH GORLITZ, A CORP. OF DEUTSCHLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KIESSLING, HOLGER, KUNZE, WOLFRAM, LORENZ, KLAUS, STEFFENS, EBERHARD
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Publication of US5299927A publication Critical patent/US5299927A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
    • B28B7/386—Cleaning

Definitions

  • the invention relates to an improved vacuum press for continuous production of plastic extruded masses.
  • the area of application of the invention is, in particular, the ceramics industry.
  • Known vacuum presses generally consist of a preliminary press or an upper press or mixer and a lower press, and a vacuum chamber which is interposed for the purpose of vacuuming the plastic mass being processed.
  • a vacuum press is also known, wherein the screw presses can be removed from the press cylinders. This procedure admittedly provides good access to the parts which are in contact with the mass, but quite a high degree of structural and manufacturing expertise is required.
  • a purpose of the invention is to provide means for fast, extensive cleaning of vacuum presses.
  • Another purpose of the invention is to permit effective cleaning of the parts of the press which come into contact with the mass, by permitting optimum accessibility to those parts.
  • a vacuum press having housing elements that are detachable from the press to facilitate cleaning of the press.
  • a vacuum press of the invention comprising a preliminary press, a vacuum chamber, and a lower press has the following features and combinations thereof:
  • a preliminary press housing a lower press housing; detachable housing elements forming a part of said preliminary press housing and said lower press housing;
  • a sieve plate holder connected to said detachable housing elements; said sieve plate holder being arranged to be pivotally movable with respect to said press housing;
  • a vacuum chamber arranged so that it can be raised and lowered vertically and also moved horizontally; said vacuum chamber capable of being secured when situated on a filler opening of said lower press;
  • mixing troughs of said preliminary press and said lower press composed of second housing elements; said second housing elements being adapted to fit the contour of receiving spaces of said preliminary press and said lower press and to fit the screw presses of said preliminary press or said lower press; and said second housing elements being pivotally attached to the press frame.
  • FIG. 1 shows a partial top plan view of the vacuum press.
  • FIG. 2 shows section A--A of FIG. 1.
  • FIG. 3 shows a partial sectional view through the sieve plate holder looking upward.
  • FIG. 4 shows the vacuum chamber moved to its cleaning position, thereby revealing the feed opening to the lower press.
  • the vacuum press of the invention is comprised of a preliminary press or upper press or mixer, a lower press and a vacuum chamber.
  • the vacuum press has pivot housing elements which are in turn pivotally attached to the press frame.
  • the horizontally hinged housing elements, such as cylinder halves, of the preliminary press are preferably connected by way of a flange connection to a sieve plate holderwhich is likewise arranged on a U-shaped support of the press frame so thatit is pivotally movable horizontally. Other means of attachment are possible.
  • a joint washer Arranged displaceably at the other end of the vacuum press is a joint washer with radial and lateral sealing means.
  • the vacuum chamber which can be raised and lowered vertically, and which can be pivoted horizontally, is releasably connected to the joint washer preferably by snap closure means. Pivotal movement of the vacuum chamber is ensured by ahinge connection to the U-shaped support. Other means for attachment can beused.
  • the vacuum chamber is placed upon the filler opening of the lower press, and is secured preferably by means of snap closure means.
  • Mixing troughs of the preliminary press and the lower press are each formed by housing elements, preferably, two in number.
  • the inner wall of the housing elements are adapted to suit or fit the contour of the receiving spaces and of the screw presses.
  • the housing elements are radially pivotally connected to the press frame preferably by way of vertically displaceable supports.
  • FIG. 1 illustrates the vacuum press according to the invention, wherein for the sake of simplicity, the lower press has not been shown.
  • the cylinder of the upper press 20 is divided vertically into two cylinder halves 5.
  • a hinge 2 which forms the connection between the cylinder halves 5 and the press frame makes it possible for the cylinder halves 5 to pivot horizontally. Broken lines areused to illustrate the cleaning position of the cylinder halves 5.
  • flange parts 4 which are connected to the flange ring 8 of the sieve plate holder 3 by way of knownsnap closure means.
  • the sieve plate holder 3 is, in turn, also pivotable horizontally, and it is connected to a U-shaped support 7 of the press frame by a hinge 16. An appropriate arrow is used to show the direction ofpivotal movement.
  • the sieve plate holder 3 which is shown by broken lines is in the cleaning position.
  • a joint washer 6 is pushed onto the side of the sieve plate holder 3 which is remote from the flange ring 8.
  • FIG. 2 shows the design of the housing elements 9 and 9' in the region of the receiving spaces 10 which assist in feeding the mass into the screw 17of the preliminary press.
  • the housing elements 9, 9' enclose the contour ofthe receiving spaces 10 and screw 17 and they form the mixing trough. Beneath their longitudinal side, the housing elements 9 are joined at a hinge connection 18 to a horizontally displaceable holder 11, which, in turn, is mounted in a guide tube 19 which is fixed to the press frame.
  • Thehousing element 9 is shown in the cleaning position in FIG. 2.
  • the lower press is also provided with appropriate housing elements 9 and 9'. All the pivotally movable press parts can be secured in their operative positions by known snap closure means.
  • the joint washer 6 has a radial sealing element 12, and a second sealing element 13 on the end of the joint washer 6 ensures that the vacuum chamber 1 is sealed at the end.
  • the vacuum chamber can be connected to the joint washer 6 by means of a snap closure means 14.
  • the vacuum chamber 1 is, in turn, designed so that it can be raised and lowered vertically, and an eccentric, not shown, is provided for that purpose.
  • the capacity of the vacuum chamber 1 to move vertically makes it possible to prevent damage to the seal arranged on the lower side of the vacuum chamber 1 when the vacuum chamber 1 is being placed on or removed from the feed opening of the lower press (not shown).
  • the vacuum chamber 1 has hinges 16 for horizontal pivotal movement, these hinges likewise being connected to the U-shaped support 7.
  • the vacuum chamber 1 is now in its cleaning position, after having first been raised by the eccentric (now shown) and horizontally pivotally moved via hinges 16.
  • the vacuum chamber is raised from the feed opening of the lower press 21, thereby preventing damage to the seal as the vacuum chamber is moved to its cleaning position.
  • the snap closure means 14 is released in order to completely disconnect thevacuum chamber 1 from the joint washer 6.
  • the connection between the vacuumchamber 1 and the filler opening of the lower press also has to be released.
  • the snap closure means of the flange ring 8 of the sieve plate holder 3 and the flange parts 4 of the cylinder halves 5 are then disengaged, and the sieve plate holder 3 can be pivoted out. After the connecting screws of the cylinder halves 5 have been loosened, the cylinder halves can be opened into the position for cleaning.
  • the snap closure means and the housing elements 9 and 9' forming the mixingtrough also have to be released, and then they have to be removed horizontally by means of the holder 11, and pivoted out radially by means of the hinge connection 18. Similarly, the housing elements of the lower press have to be brought into the cleaning position.
  • the housing parts, sieve plate holder and vacuum chamber are brought into the operative position and secured there in a similar way, but by proceeding in reverse order.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Press Drives And Press Lines (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Cleaning In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
US07/851,483 1991-03-14 1992-03-13 Vacuum press for continuous production of plastic extruded masses Expired - Fee Related US5299927A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4108342A DE4108342C2 (de) 1991-03-14 1991-03-14 Vakuumpresse, insbesondere für keramische Massen
DE4108342 1991-03-14

Publications (1)

Publication Number Publication Date
US5299927A true US5299927A (en) 1994-04-05

Family

ID=6427316

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/851,483 Expired - Fee Related US5299927A (en) 1991-03-14 1992-03-13 Vacuum press for continuous production of plastic extruded masses

Country Status (9)

Country Link
US (1) US5299927A (fr)
EP (1) EP0503335B1 (fr)
JP (1) JPH05212712A (fr)
CN (1) CN1028157C (fr)
BR (1) BR9200847A (fr)
CZ (1) CZ281928B6 (fr)
DE (2) DE4108342C2 (fr)
ES (1) ES2046902T3 (fr)
RU (1) RU2041062C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2375071A (en) * 2001-04-03 2002-11-06 William Roy Powel Extrusion die (slipper) adjustment mechanism

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103419273B (zh) * 2012-05-22 2015-09-23 青岛青锻锻压机械有限公司 电动螺旋压砖机
CN104289472A (zh) * 2014-07-31 2015-01-21 广西北流仲礼瓷业有限公司 一种用于陶瓷制造的除尘器
WO2016151474A1 (fr) * 2015-03-20 2016-09-29 Siti - B&T Group S.P.A. Groupe de panneaux d'extrémité d'une presse pour produits en céramique et autres
CN106292731B (zh) * 2015-06-08 2019-02-15 佛山市恒力泰机械有限公司 一种上模与下模夹持粉料同步下降的填料方法

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1356691A (en) * 1919-01-16 1920-10-26 Farrel Foundry Rubber-mixer
US2257695A (en) * 1939-03-23 1941-09-30 Lihotzky Emil Worm press for the manufacture of alimentary pastes
GB765383A (en) * 1954-03-01 1957-01-09 Farrel Birmingham Co Apparatus for extruding plastic material
US2918714A (en) * 1957-03-22 1959-12-29 Garvey James Split plodder nozzles
US3304579A (en) * 1965-03-30 1967-02-21 Jr Thomas Ashworth Dual hinged side delivery head for extruders
US3561371A (en) * 1969-04-10 1971-02-09 Ralston Purina Co Extruder door
US3574891A (en) * 1968-08-19 1971-04-13 French Oil Mill Machinery Mechanical screw press
SU514708A1 (ru) * 1974-12-08 1976-05-25 Проектно-конструкторское бюро по проектированию оборудования для производства пластических масс и синтетических смол Устройство дл смешивани пластичных материалов
US4028027A (en) * 1974-05-16 1977-06-07 Werner & Pfleiderer Screw housing for a screw machine
US4089510A (en) * 1975-10-01 1978-05-16 Societe Nationale Des Poudres Et Explosifs Screw extruder
US4234298A (en) * 1977-06-15 1980-11-18 Hermann Berstorff Maschinenbau Gmbh Apparatus for removing a cylinder from a screw extruder
JPS56113A (en) * 1979-06-15 1981-01-06 Matsushita Electric Works Ltd Kneader casing
US4385876A (en) * 1978-05-31 1983-05-31 Baker Perkins Inc. Split wear liner for twin bore barrel assembly
US4986745A (en) * 1987-01-05 1991-01-22 Kabushiki Kaisha Kobe Seiko Sho Roller head opening and closing apparatus in roller head extruder

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE678466C (de) * 1936-10-02 1939-07-15 Gudrun Welzel Geb Philipp Schneckenpresse mit Aufbereitung und Zufuehrung der keramischen Masse in geschnitzelter Form
GB607076A (en) * 1946-01-25 1948-08-25 Charles Leslie Willis Improvements in and relating to machines for de-airing plastic materials
DE1216171B (de) * 1963-07-20 1966-05-05 Soest Ferrum Appbau G M B H Schneckenpresse zum Verpressen von Steinzeugmassen od. dgl.
DE1805868A1 (de) * 1968-10-29 1970-05-27 Krone Kg Strangpresse
NL6818261A (fr) * 1968-12-19 1970-06-23

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1356691A (en) * 1919-01-16 1920-10-26 Farrel Foundry Rubber-mixer
US2257695A (en) * 1939-03-23 1941-09-30 Lihotzky Emil Worm press for the manufacture of alimentary pastes
GB765383A (en) * 1954-03-01 1957-01-09 Farrel Birmingham Co Apparatus for extruding plastic material
US2918714A (en) * 1957-03-22 1959-12-29 Garvey James Split plodder nozzles
US3304579A (en) * 1965-03-30 1967-02-21 Jr Thomas Ashworth Dual hinged side delivery head for extruders
US3574891A (en) * 1968-08-19 1971-04-13 French Oil Mill Machinery Mechanical screw press
US3561371A (en) * 1969-04-10 1971-02-09 Ralston Purina Co Extruder door
US4028027A (en) * 1974-05-16 1977-06-07 Werner & Pfleiderer Screw housing for a screw machine
SU514708A1 (ru) * 1974-12-08 1976-05-25 Проектно-конструкторское бюро по проектированию оборудования для производства пластических масс и синтетических смол Устройство дл смешивани пластичных материалов
US4089510A (en) * 1975-10-01 1978-05-16 Societe Nationale Des Poudres Et Explosifs Screw extruder
US4234298A (en) * 1977-06-15 1980-11-18 Hermann Berstorff Maschinenbau Gmbh Apparatus for removing a cylinder from a screw extruder
US4385876A (en) * 1978-05-31 1983-05-31 Baker Perkins Inc. Split wear liner for twin bore barrel assembly
JPS56113A (en) * 1979-06-15 1981-01-06 Matsushita Electric Works Ltd Kneader casing
US4986745A (en) * 1987-01-05 1991-01-22 Kabushiki Kaisha Kobe Seiko Sho Roller head opening and closing apparatus in roller head extruder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2375071A (en) * 2001-04-03 2002-11-06 William Roy Powel Extrusion die (slipper) adjustment mechanism
GB2375071B (en) * 2001-04-03 2004-09-15 William Roy Powel Extrusion die(slipper)adjustment mechanism

Also Published As

Publication number Publication date
DE59200030D1 (de) 1994-01-20
CS74892A3 (en) 1992-09-16
ES2046902T3 (es) 1994-02-01
DE4108342A1 (de) 1992-09-24
EP0503335A1 (fr) 1992-09-16
CN1028157C (zh) 1995-04-12
EP0503335B1 (fr) 1993-12-08
BR9200847A (pt) 1992-11-24
JPH05212712A (ja) 1993-08-24
CZ281928B6 (cs) 1997-04-16
RU2041062C1 (ru) 1995-08-09
DE4108342C2 (de) 1994-01-13
CN1064642A (zh) 1992-09-23

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AS Assignment

Owner name: KEMA-KERAMIKMASCHINENBAU GMBH GORLITZ, A CORP. OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:STEFFENS, EBERHARD;KUNZE, WOLFRAM;LORENZ, KLAUS;AND OTHERS;REEL/FRAME:006101/0867

Effective date: 19920429

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 19980405

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362